Improvement in saw-mills



2 Shaet-s-Sheet 1.- M. HILLABOLD.

Saw Mill.

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, 2 Sheets-Sheet 2.- M. HILLABOLD Saw Mill; No. 80,824. Patented Aug. 11, 1868.

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UNITED STATES PATENT OEEIoE.

MARTIN HILLABOLD, OF SYRACUSE, INDIANA.

IMPROVEMENT IN SAW-MILLS.

Specification forming part of Letters Patent No. 80,824, dated August 11, 1868; antedated August 1, 1868.

it all whom it may concern:

Be it known that I, MARTIN HILLABOLD, of Syracuse, in the county of Kosciusko and State of Indiana, have invented certain new and useful Improvements in Saw-Mills; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Figure 1 represents a detached view. Fig. 2 represents a detached view. Fig. 3 is a plan view. Fig. 4 is a detached view. Fig. 5 is a detached view. Fig. 6 is an end elevation.

The nature of my invention consists, first, in an improved method of handling logs to be sawed by a circular saw; second, in arranging and operating the head and tail blocks of the carriage, that very large logs may be slabbed or flatted with a comparatively small saw.

To enable others skilled in the arts to make and use my invention, I will proceed to describe its construction and operation.

A represents the saw, which is in every respect like those in general'use. B represents a mandrel, secured in suitable bearings, and to which is secured apulley, a. 0 represents a bull wheel, which extends transversely across the carriage-track. This wheel is secured in suitable bearings, and is provided with the necessary ropes or chains for the purpose of drawing and handling logs, as will be more fully described. On one end of this wheel is secured a cog-gear, as seen in the drawings. Directly under this wheel is positioned a pinion, which is connected by a pulley and belt to the pulley a on the sawmandrel. The frame in which this pinion is secured is pivoted at or near one end to suitable frame-work. The other end is suspended by any suitable means to a lever, b, by which it may be lowered or raised to throw it out of and into gear with the bull-wheel. c represents a diagonal pin, which is inserted into the bull-wheel at or near the end opposite that to which the gearing is secured, over which the rope may be thrown, for purposes hereinafter described.

1) represents a log-carriage, which is constructed as follows: A suitable frame is mounted upon a set of rolls, on which it moves, having ties extending across the ends of the frame, which project above the surface thereof,

carriage ready for operation.

as seen in the drawings, Fig. 4. d cl are elevators, which are hinged to the bed of the frame-work, as seen in the drawings, and are so arranged and constructed as to be folded inward and down so as to come even with the top of the upper surface of the cross-ties before mentioned. f is a rod which connects these risers. Said rod is secured to them, as seen in the drawings, in such a manner that by elevating one of them the other is raised also simultaneously. The inner ends of said risers are chamfered in the form seen in the drawings.

E represents the log-carriage, on which the log is placed to saw the same. This carriage is placed, as others are, upon the track or ways in the ordinary manner, and is provided with the ordinary head and tail blocks, and, is constructed as follows: g 9 represent the rails or side pieces of the carriage, which are tied together by the ordinary method. One-half of the timber is left with full strength. The bal ance is notched or recessed out in the manner seen in the drawings, so as to form graduated steps. These recesses are made large or wide enough to receive and support the head and tail blocks, as seen. Said recesses are positioned on the side of the rail opposite to the saw. Upon the upper surface of the outside rail there is a slight head, which fits into a re cess or groove in the head-block h.

F represents the head-block, which is in every respect constructed in the ordinary way, with the exception that the outer end is provided with a deep recess, 6, made transverse to it, and which fits over the side rail when the head-block rests upon the graduated steps, as described. The blocks may be shifted readily to either of these steps, or they may be mounted upon the upper surface, as required. It will be observed that, when the blocks are mounted on top of the rails, their inner ends extend a considerable distance farther in toward the saw than when they are mounted on the severally graduated steps. The object of this difference will be fully explained in the operation of the invention.

The operation of my invention is as follows: A log is drawn into the mill or placed on the The rope is thrown over the diagonal pin in the bull-wheel, and the lever is drawn down, which sets the wheel in motion, and in winding up the rope, the hook, which is thrown over the log, takes hold of and rolls the log to its place. The head-blocks are resting on the lowest recesses at this time, and their inner ends come considerably below the flange and nut which secure the saw to the mandrel; hence it will be seen that they do not interfere with the movements of the log in the least, and the saw is enabled to cut its full width into the log, whereas, if the ends of the blocks were placed close to the saw, and were raised up to the top of or above the flange or nut, so as to enable the said blocks to pass freely, then that portion of the log where cutting is going on is thrown up a considerable distance above the mandrel, and only the upper portion of the saw is brought to bear on it. This is a feature that is of the greatest importance in practice, as a sixty-inch saw will do the same work that, with the ordinary method, would require a seventy-two-inch saw, and thus power is economized, as well as a great amount of trouble in running larger saws, as well as elevates the risers on the log-carriage, and secures the hook under the outside and lets on the power, and thus rolls it over, when it will strike on said risers, as seen in red lines, and the strain on the rope will draw the log immediately to its seat, and the sawing may proceed, as before. There are various other functions that may be performed readily and greatly facilitate the handling of logs, but which there is no necessity of explaining at this time. What I claim as new, and desire to secure by LettersPatent, is v The side rails g g of the saw-carriage E, constructed in the manner and for the pur poses substantially as described and set forth.

MARTIN HILLA'BOLD. [L. s.] Witnesses:

H. F. WILLsoN, PATRICK DOHERTY. 

